Mesenteric Lymph Node Hamartoma (Castleman's Disease) in Association with Superior Mesenteric Arteriovenous Fistula

We present a case of 21-year-old female patient with history of pain abdomen and abdominal distension. The patient also had oedema of the limbs, puffiness of the face, pallor and palpable mass in the abdomen. Ultrasonography of the abdomen and computed tomographic angiogram was done and it showed presence of vascular mass along with arteriovenous malformation in the mesentry of small gut between distal branches of superior mesenteric artery and vein. Surgical excision of the mass with ligation and division of the arteriovenous malformation was done through midline laparotomy. Histopathological examination was consistent with the diagnosis of Castleman's disease. The Patient recovered well and was discharged after seven days.